Ceiling light fixture diffuser side rail



FIG. 1 is a front perspective view of a ceiling light fixture diffuser side rail showing my new design;

FIG. 2 is a rear perspective view thereof; and

FIG. 3 is an end view thereof.

The end not shown is similar to the end shown. The side rail is broken away to indicate indeterminate length. 

The ornamental design for ceiling light fixture diffuser side rail, as shown and described. 